Sydney Pro installed successfully with a child theme finance

Hi,

Finally, I installed in localhost successfully the Sydney Pro and the child them finance. Now I am customising the finance theme. If I do that and the Sydney pro are upgraded later, will it change my customisation of finance theme? Or should I install child theme for Sydney pro and add my own CSS coding there?

Hello,

Generally everything should be fine if you customize child theme and update parent theme.

But please remember about importance of regular full site backups (files and database):
https://codex.wordpress.org/WordPress_Backups

Also you might want to check this tutorial:

Please feel free to ask any other questions that you might have.

Kind Regards, Roman.